Don't ditch that broken RC. Just because you lost the controller, fried the electronics, or broke the antenna is no reason to dump that RC in the trash. Whether it's a toy or a hobby-grade RC, find out why an RC graveyard is a good thing to have around.
You Can Repair One Broken RC With Parts From Another
You can replace some parts with a similar piece from another RC. Create your own salvage yard for wheels, propellers, working motors, good fuel tubing, screws, body clips, and other bits and pieces that can be transferred to another RC. Don't forget the controllers. Even if the old RC is completely unsalvageable, don't ditch the controller. With RC toys, the controller is often lost and that extra you saved from another toy may just be the right frequency.

